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1 //
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2 // AccessiblePeakMeter.h
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3 //
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4 // Author: Fiore Martin
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5 // Started from IPlugMultiTargets example in WDL-OL, by Oli Larkin - https://github.com/olilarkin/wdl-ol
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6 //
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7 // Licensed under the Cockos WDL License, see README.txt
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8 //
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9
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10
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11 #ifndef __ACCESSIBLEPEAKMETER__
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12 #define __ACCESSIBLEPEAKMETER__
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13
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14 #include "IPlug_include_in_plug_hdr.h"
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15
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16 #include "stk/include/SineWave.h"
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17 #include "stk/include/Envelope.h"
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18 #include "stk/include/ADSR.h"
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19
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20
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21 class AccessiblePeakMeter : public IPlug
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22 {
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23 public:
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24
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25 AccessiblePeakMeter(IPlugInstanceInfo instanceInfo);
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26 ~AccessiblePeakMeter();
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27
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28 void Reset();
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29 void OnParamChange(int paramIdx);
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30 void ProcessDoubleReplacing(double** inputs, double** outputs, int nFrames);
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31 bool HostRequestingAboutBox();
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32
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33 private:
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34 static const double DRYWET_DEFAULT;
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35 static const int SONIFICATION_TYPE_DEFAULT;
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36 static const double METERDECAY_DEFAULT;
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37 static const double THRESHOLD_DEFAULT;
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38 static const double BEEP_TIME;
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39 static const double DB_RANGE;
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40 static const double SONIFICATION_RANGE;
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41 static const int SONIFICATION_TYPE_CLIPPING;
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42 static const int SONIFICATION_TYPE_CONTINUOUS;
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43 static const int MAX_CHANNELS = 2;
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44 static const int NUM_PRESETS;
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45 static const double MIN_SONIFICATION_FREQ;
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46 static const int NUM_KNOB_FRAMES;
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47 static const double CLIPPING_CEILING_SNAP;
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48
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49 /* parameters on GUI */
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50 double mDry;
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51 double mWet;
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52 double mMeterDecayRate;
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53 double mThreshold;
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54
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55 double mSampleRate;
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56
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57 /* paramters for peak level meter */
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58 double mPrevPeak[MAX_CHANNELS];
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59 int mMeterIdx[MAX_CHANNELS];
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60
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61 /* struct Sonification is the sonification engine. It has two substructures containing
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62 data specific to each type (clipping/continuous)
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63 */
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64 struct Sonification {
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65 int type; // type of sonification : clipping - continous
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66 stk::SineWave ugen[MAX_CHANNELS]; // generator for both types of sonification
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67
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68 struct Continous {
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69 /* this envelope is to turn off the countinuous sonification smoothly
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70 without clicks. It's always 1, unless the sonification is being turned off.
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71 */
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72 stk::Envelope envelope[MAX_CHANNELS];
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73 bool isOn[MAX_CHANNELS];
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74 } continous;
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75
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76 struct Clipping {
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77 /* max diff is used to keep the pitch more consistent over different blocks
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78 with maxDiff the beep sounds better cause is not constantly pitch modulated */
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79 double maxDiff[MAX_CHANNELS];
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80 stk::ADSR envelope[MAX_CHANNELS];
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81 } clipping;
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82
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83 /* resets all the ugens. When srate is less than 0, type and ugen freq are
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84 not affected by resetas well as sample rate.
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85 */
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86 void reset(double srate = -1.0){
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87
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88 for (int i = 0; i < MAX_CHANNELS; i++){
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89
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90 ugen[i].reset();
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91
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92 continous.isOn[i] = true;
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93 stk::Envelope & coe = continous.envelope[i];
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94 coe.setValue(1.0); // setValue also sets the target to the value
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95 coe.setTime(0.2);
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96
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97 clipping.maxDiff[i] = 0.0;
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98 stk::ADSR & cle = clipping.envelope[i];
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99 cle.setValue(0.0);
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100 cle.setReleaseTime(BEEP_TIME);
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101 cle.setAttackTime(0.01);
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102 cle.setSustainLevel(1);
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103
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104 if (srate > 0.0){
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105 ugen[i].setSampleRate(srate);
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106 coe.setSampleRate(srate);
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107 cle.setSampleRate(srate);
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108 }
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109 }
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110 }
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111
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112 Sonification() : type(SONIFICATION_TYPE_DEFAULT) {
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113 reset();
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114 }
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115
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116 } mSonification;
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117
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118 /* adds continous sonification on top of the original audio signal */
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119 void addContinuousSonification(double** inputs, double** outputs, int nFrames);
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120 /* adds clipping sonification on top of the original audio signal */
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121 void addClippingSonification(double** inputs, double** outputs, int nFrames);
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122 /* for dry/wet mix */
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123 inline double mix(double dry, double wet) const{
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124 return dry * mDry + wet * mWet;
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125 }
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126 };
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127
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128
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129 #endif //__ACCESSIBLEPEAKMETER__
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